TT Coupe L4-1.8L Turbo (AWP) (2005)
If the specification is obtained:
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Connect test box to control module wiring harness, do not connect Engine Control Module (ECM), See: Computers and Control Systems/Testing
and Inspection/Component Tests and General Diagnostics/Test Box, Connecting For Wiring Test connecting test box for wiring test.
Engine Codes AMU, ATC
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Check wire between test box socket 64+2-pin connector terminal 2 for open circuit according to wiring diagram.
Wiring resistance: max. 1.5 Ohms
Engine Codes AWP, BEA
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Check wire between test box socket 64+2-pin connector terminal 2 for open circuit according to wiring diagram.
Wiring resistance: max. 1.5 Ohms
All Vehicles
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Also check the wire for short circuit to B+ and Ground (GND).
Specification: Infinite Ohms
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Check wire between 2-pin connector terminal 1 and the Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.
Wiring resistance: max. 1.5 Ohms
If no fault is detected in the wiring:
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Replace Motronic Engine Control Module (ECM) -J220-